ZTE Blade A430 - Manual (Page 109)

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Accessibility
Configure accessibility plug-ins on your phone, such as using
TalkBack for low-vision users.
Printing
Configure cloud printing service options, manage print jobs and
more.
Developer Options
Developer options contains settings that are useful when
developing Android applications. The menu is hidden until you
touch Build number in the About phone menu 5 times.
WARNING: The developer option settings are intended for
development use only. They can cause your phone and
applications on it to break or misbehave.
About Phone
View phone status and legal information. You can also upgrade
your phone system.